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$ORIGIN COM.
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604800 ;expire after a week
86400 ;minimum of a day
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$TTL 172800
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函数生成从0到3的随机数，并且它工作得很好，但是我注意到有些奇怪。
每次我运行并重新运行项目时，该功能都会不断产生相同的数字模式。
这是我使用的尽可能简单的代码。
rand()这会打印从0到3的15个随机数，对我来说这就是我得到的
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main()
{
int randomNumber;
for (int i = 0; i < 15; i++)
{
randomNumber = rand() % 4;
printf("%d ", randomNumber);
}
getchar();
return 0;
}
这很好。但是问题是，每次我运行该程序时，都会打印出完全相同的内容。
知道为什么会这样吗？
答案 0 :(得分：1)
在计算机科学中，没有像随机数这样的东西。因此，要生成不同的输出，我们必须使用伪随机。为此，请将srand(time(0))写入声明变量的位置。